TREA

Kazutada Katsukura

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  • Tokorozawa, JP
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Patents Grantslast 30 patents

  • Information Patent Grant

    Channel switching network
    • Patent number 4,353,066
    • Issue date Oct 5, 1982
    • Iwasaki Tsushinki Kabushiki Kaisha
    • Tetsuro Inomata
    • H04 - ELECTRIC COMMUNICATION TECHNIQUE
  • Information Patent Grant

    Key telephone system
    • Patent number 4,234,765
    • Issue date Nov 18, 1980
    • Iwasaki Tsushinki Kabushiki Kaisha
    • Kouichi Sekiguchi
    • H04 - ELECTRIC COMMUNICATION TECHNIQUE